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NCT Programming: Circular Drilling with G81 Cycle and G16 Polar Coordinates

NCT program example to show how G81 drilling cycle can be used to drill in a circle using G15 G16 Polar Coordinate Commands and G81 Drilling Cycle.

G Codes

G CodeFunction
G15polar coordinate command cancel
G16polar coordinate command
G81drilling, spot boring cycle

 

NCT Programming Example

NCT Programming: Circular Drilling with G81 Cycle and G16 Polar Coordinates

%O7073(7.3)
N100 T1
N110 G54 G0 X0 Y0
N120 G43 Z50 H1
N130 S1000 M3 M8
N140 G16 G0 X50 Y-10
N150 G81 X50 YI10 R2 Z-10 L36
N160 G80 G15
N170 G0 Z100
N180 M30
%

CNC Machine

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  2. Example Program: G81 & G83 Peck Drilling with G98/G99 Return Levels
  3. Fanuc CNC G81 Drilling Cycle Program – Step-by-Step Example
  4. CNC Sample Program: G83 Peck Drilling with G70 Bolt Hole Circle for Evenly Spaced Deep Holes
  5. Optimizing CNC Drilling: G81 Cycle on Grid Plate – Practical Sample Program
  6. Master G81 Drilling Cycle with G91 Incremental Mode: Step-by-Step Example Program
  7. Efficient Two-Step Block Drilling Using G81 CNC Cycle
  8. Optimizing Fanuc G81 Drilling Cycle for Efficient Spot Drilling
  9. Efficient Circle Part Drilling with G81/G16 in NCT Programming
  10. Mastering the NCT G81 Spot Drilling Cycle: Precision Boring Made Simple